Taskbar icon different from the icon of the window

Chris Kawa · wrote on 28 Aug 2014, 20:27

Well it's a bit of a trickery but if you create an .ico file with different sizes then you might get what you want. The window will use the small one (16px or 24px, I don't remember) while the task bar would use larger ones. To make it an application icon you put it in a resource file "as usually":http://qt-project.org/doc/qt-5/appicon.html.

ReDKiiL · wrote on 28 Aug 2014, 22:35

I don't think it will be possible to do this.
Could you tell me if you like at least remove the icon of the window?

Chris Kawa · wrote on 29 Aug 2014, 07:03

[quote author="ReDKiiL" date="1409265345"]I don't think it will be possible to do this.[/quote]
I actually tried this and it works.
I created an icon with different images for various sizes (I know, I'm not da Vinci):!http://i296.photobucket.com/albums/mm188/crossblades666/icon.jpg(Icon)!

And then set that as an app icon. As I said the app window uses the small one (16px) while tha task bar takes a larger one (32px):!http://i296.photobucket.com/albums/mm188/crossblades666/app.jpg(Application icon)!

[quote author="ReDKiiL" date="1409265345"]Could you tell me if you like at least remove the icon of the window?[/quote]In Windows whether it has an icon or not depends on the window type and used windows flags. You can try to play around with window flags, eg.
@ setWindowFlags(Qt::CustomizeWindowHint | Qt::WindowTitleHint); @ but you might loose some other features in the process. Check other flags and see what you can come up with. For example tool windows(Qt::Tool flag) don't have an icon by default (but they can't be top level windows).
Another option is using the same trick as before: creating a fully transparent image for the 16px version. Of course this would also be invisible in the Explorer when someone switches to list view or other small icon mode.

ReDKiiL · wrote on 29 Aug 2014, 08:15

[quote author="Chris Kawa" date="1409295819"]!http://i296.photobucket.com/albums/mm188/crossblades666/app.jpg(Application icon)!
[/quote]

Good! How did you do?
What program you use to create the icons?

Chris Kawa · wrote on 29 Aug 2014, 09:52

I did it "like I already described":http://qt-project.org/doc/qt-5/appicon.html
I used built-in Visual Studio editor but it's not very sophisticated. Basically any graphics program that supports .ico format will do. Some that I know or used in the past are IcoFX (free up to 1.6.4), Gimp, Paint.NET (with ico plugin), Inkscape(vector graphics) or even Photoshop (with a plugin).

ReDKiiL · wrote on 29 Aug 2014, 10:33

I have to add the files into .ico extension? or. bmp?
I have to use the .rc file or add directly into the pro file?

Chris Kawa · wrote on 29 Aug 2014, 10:43

That wiki page says it all but let me recap.
If you don't already use a .rc file (which you most probably don't) then all you need to do is add in the .pro file
@
RC_ICONS = whatever.ico
@

.bmp format does not support multiple images in one file. .ico does. Use .ico.

ReDKiiL · wrote on 29 Aug 2014, 11:17

How do I add more icons in just one line? in the pro file?

I'm trying to searching, there are times when I'm trying to make this work.
You could make your source code so I can see?

Chris Kawa · wrote on 29 Aug 2014, 11:27

You don't add multiple files. It's a single file.
.ico format supports multiple resolutions and bit depths inside a single file.
It has nothing to do with code(or Qt) and there's nothing more to show than the above line in the .pro file.

ReDKiiL · wrote on 29 Aug 2014, 11:53

How can I create an icon with multiple picture inside?
I tried using Ico FX and GIMP. and I couldn't.

Chris Kawa · wrote on 29 Aug 2014, 12:08

Come on... do some work.
http://youtu.be/4sAxiGek6VY
http://youtu.be/bc_oWkBR7ow

ReDKiiL · wrote on 29 Aug 2014, 12:42

Finally, I get it! Thank you for your patience.